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Real Estate - Schedule of Construction in Progress (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Real Estate [Line Items] |  |
Construction in progress | $ 467,939 | $ 322,226
Twinbrook Quarter |  |
Real Estate [Line Items] |  |
Construction in progress | 328,862 | 227,672
Accumulated capitalized interest costs | 22,400 | 12,400
Hampden House |  |
Real Estate [Line Items] |  |
Construction in progress | 120,787 | 80,704
Accumulated capitalized interest costs | 12,400 | 8,700
Other |  |
Real Estate [Line Items] |  |
Construction in progress | $ 18,290 | $ 13,850

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- Definition The current amount of expenditures for a real estate project that has not yet been completed. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(1)(d)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 + Details
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